Synchronize stream.
  Calls protected virtual member sync.
  The standard behavior of member function sync in derived stream buffer classes is to syncronize the stream buffer with any external associated device (like the file in file streams).

Parameters.

none

 

Return Value.
  If the function succeeds it shall return 0, otherwise -1.

Example.

// pubsync member
#include <iostream>
#include <fstream>
using namespace std;

int main () {

  streambuf * pbuf;
  ofstream ostr ("test.txt");  

  pbuf = ostr.rdbuf();

  pbuf->sputn ("First sentence\n",15);
  pbuf->pubsync();
  pbuf->sputn ("Second sentence\n",16);

  ostr.close();

  return 0;
}

Basic template member declaration ( basic_streambuf<charT,traits> ):

int pubsync ( );

See also.
  streambuf class